A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 6105-01-202-8706
NSN 5998-01-322-8579
NSN 6130-01-496-9625
NSN 5950-01-535-7015
NSN 6150-01-018-8038
NSN 5915-00-868-6427
NSN 5975-01-097-9023
NSN 5855-00-185-1560
NSN 5905-00-630-6507
NSN 6145-01-218-6029
NSN 6620-01-322-6193
NSN 5985-00-631-5167